The second system is the voluntary, behavioral system.

第二套系统是自发行为系统。

youdao

He favours a voluntary cap-and-trade system for curbing carbon emissions, which is like arguing for a voluntary income tax.

他赞成用一种自愿的碳交易体制来降低碳排放，这有些像自愿为自己的收入纳税。

youdao

So far, only 40 countries have established a 100% voluntary blood donation system.

迄今为止，只有40个国家已建立了100%的自愿献血制度。

youdao

In our voluntary system, it is the consumers who have the power to make this choice.

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The unions say the tests should be replaced with a voluntary system based on teachers' assessments.

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"I think where Neel is coming from, he's asking for a more voluntary system, " he says.

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